Mechanical vacuum



DCC. 15, 1931. E, E, CANNON 1,836,443

` MECHANIGALl VACUUM Filed Feb. 5, 1951 's sheets-sheet 2 NS A \ @mmmwx xxx C'anon Allorney E. E. CANNON 1,836,443 MECHANICAL VACUUM Filed. Feb. 3, 1931 SheetS-Sheet 3 A llomcy a. Nm 1 mm /K 1 Dem 15, 1931.

\ cases, refrigerators,

Patented Dec. 15, 1931 UNITEDfrsTATEs PATENToFr-lce 4EvAN EDWARD CANNON, or BEAUMONT, MEGEANIGAL VACUUM .Application led February 3, 1931. Serial No. 513,227.

This invention relates-broadly to freezer and such types 'of refrlgerating counters such as meat cases and the like used in stores.

display counter embo Q tom to .th

A primary object of the invention is to provide means for producing a mechanical vacuum capable of application to such freezer cases, meat display cases and the like.

Wlth the above and other objects in view, the invention consists in the novel arrangement, combination, and construction as detailed in the accompanying drawings and hereinafter more explicitly described.

In the accompanying drawings forming part of this specication:

Figure 1 is a pers ective view of a meat ying the features of the present invention.

Figure 2 is afragmentary detail sectional view taken through a portion of the counter p or clearly illustrating the invention.

Figure 3 is a detail sectional elevational view of a valve forming part of the invention. Figure 4 is a longitudinal sectional view through the valve per se.

With reference more in detail to the drawgs, it will be seen that the reference character C designates a meat counter or the like, and according to the present invention is provided with a vacuum at the front and top thereof.

In forming the vacuum, the wall of the counter is provided with av suitable opening. Lining this opening is a substantially frame like iner formed from a strip of metal, the liner bein designated by the reference character 5. t the inner end thereof the lining frame-5 is provided with a retaining ii'ange 6 that is preferably provided with beveled faces 7 ably within the liner 5 is a frame like member 9 formed of rubber or analogous material. The member 9 is channel shaped in cross section and is provided at opposite ends with the flanges 10 and 11 respectively. Preferabl portion o the member 9 tapers from the'bote upper portion o-f the memberfso` upper portion of the member 9 is of slightly less than the width of the that the and S respectively. Fitting conformthe oppositely disposed, vertical lower horizontal portion of said member 9. The member 9 provides insulation for the device as will be apparent.

Arranged within the confines of the member 9, and disposed against the inner face of the flange 10 of said member, is a pane or sheet of glass 12. The pane 12 is confined between the flange 10 and an adjacent side of a spacer member 13. Spacer member 13 is in the nature of a frame like structure extending along the marginal edges of the pane l2, and on it-s inner circumferential face 'is provided with a groove 14. What may be termed an insert or spreader 15, is inserted within the groove 14. The insert 15 is somewhat wedge shaped in cross section as illustrated and is retained the medium of fastening elements such as screws 16 passing through the spreader 15, spacer 13, insulation rubber 9, liner 5, and into the material of the counter C.

wit-hin the groove 14,

` A second vertical transparent panel 12a is y disposed in the opposite side of the spacer 13 and disposed in spaced parallelism to the panel 12. The panel 12a is anchored in position between the spacer 13'and a second sectional spacer, that includes complemental sections 16 and 17 respectively. The sections 1 6 and 17 are formed of rubber or kindred material.

The section 16 at one end thereof is provided with a flange 18 contacting an adjacent of fastening of section 16, and flange 21 of section 17.

Overla ping portions o the sections 16 and 17 are veled as shown, and opposite vertical portions of the sections decrease in width as they continue toward the upper portion of the respective sections as shown in Figure 2.

An obliquely disposed transparent pane or panel 12b is anchored in position between the a valve, the ,same including a cylindrical body iange 21 of section 17, and the ange 11 of the msulation strip 9.

`An element 22 formed of rubber and functioning in the nature ofa gasket, is disposed Yagainst the flange 11 and a marginal portion of the transparent panel 12b, the gasket 22 being provided with a notch 23 for accommodating the flange 11. Above the notch, the asket 22 is cut away to provide a shoulder or accommodating an extended portion of a retaining flange or molding 24. Molding 24 is 'anchored in position through the medium of suitable fastening elements 25.

Preferably, the transparent panels are cemented to the flanges 10, 18, 21 and to the spacer 13 and gasket 22. Thus it will be seen that between adjacent panels are provided vacuum chambers, a relatively narrow vacuum chamber 26 being provided between the parallel panels 12 and 12a, and a relatively wide vacuum chamber 27 being provided between the panels 12a and 12b, the chamber 27 progressively decreasing in width 'up- Wardly. A v

For each vacuum chamber there is provided 28 reduced at one end as at'29. The body 28 is provided with an axial bore 30 continuing through the extension or reduced end 29. At its opposite end. the body 28 is counterbored as at 31 and at the inner end of the counter bore is provided with a conical valve seat 32.

A valve core 33 has its beveled end normally engaged with the seat 32 through the medium of a coil spring 34. One end of the spring 34 bears against the valve core 33 and the other end of the spring bea-rs against one end of an axially bored plug 35 threaded within the counter bore 31.

In operatively positioning the 'valve with respect to chamber 26, for example, it will be seent-hat the reduced end 29 of the valve body extends through a portion of the insert or spreader 15, and at said end is provided with an annular ange 36 that is adapted to be embedded in the insulation rubber 9. Remote from flange 36, a anged hexagonal nut 37 is screwed on to the threaded end 38 .of the body 28, and the flanged nut 37 ts within a recess provided end wall W of the counter C. The threaded end portion 38 at its extremity extends into a pocket 39 provided in said one wall W, and to this free end portion, may be threaded the hose of a suitable suction pump'for drawing air from the chamber 26.

Pocket 39 is normally medium of a suitable hinged door 40. The valve for the chamber 27 is mounted in identically the same manner as described with reference to the valve or chamber 26.

F^or the purpose of reinforcing the glass panels when a vacuum has been created between two adjacent panels there is provided a suitable spreader 35,' of glass or other suit- -cemented to the panels as'sh .vention, it is to therefor in a portion of anV closed through theable material, the ends of thespreader being own. Aspreader 35 ma be arranged in each of the chambers 26 an 27.

It is also to be apparent,that the adjacent chambers 26 and 27 may have their structure duplicated in the top or table part of the counter, or in anyother wall of the counter.

Even though I have herein shown and described the preferred embodiment of the inbe understood that the same is susceptible of changes, modications and improvements coming within the scope of the appended claims. A

Having thus described my invention, what I claim as new is:

l. A counter or the like comprising a wall having an aperture having a strip of metal lining the aperture, a pair of relatively d within the opening and cooperating with the lining strip for closing said opening, a strip of rubber inserted between the edges of said panel and spaced panels arrange the corresponding portions of said lining.

inserted between the edges of said panels and 'Y the corresponding ortions of said lining strip, a spacer mem and contacting the latter adjacent the marginal edges thereof, said spacer member provided with an internal groove, a wedge member fitted within the groove, and fastening elements passing through said wedge member, said spacing member,

in said wall. y

3. In a device of the character described, the combination of a wall having an aperture therein, a-strip of metal lining the aperture and provided on one end thereof with a flange, an insulation strip of rubber arranged within the confines of said metal lining, said insulation strip being channel shaped in cro section-2 a plurality of relatively spaced panels having their marginal edges fitting witxin s ge l said rubber strip and said metallic li ng strip being embedded of a wall having an aperture j r between said panels flange, .aninsulation strip of rubber arranged i within the connes of said metal lining, said insulatlon strip being channel shaped in cross- I section, a plurality of relatively spaced pansaid Wall, and

els having their marginal edges tting within the channel of said rubber strip, wed e means arranged between adjacent panels yor spacing said panels, and a valve member supported in the wall and having one end thereof openin into a space between adjacent panels, an having its opposite end adapted to be coupled to a suction hose. l

5. A-counter or the like including in combination a wall provided with an aperture, a plurality of spaced panels closing said aperture, fianged rubber strips disposed between the panels, the flanges of said panels.

6. In combination, a wall having an aper ture, a pair of spaced transparent panels substantially closing said aperture, an expansible member arranged 4between'said panels and wedge means and wedge means urging contact with said pane s.

7. A device of the character described comprising in combination a wall having an aperture therein, spaced panels substantially closing said aperture, a valve arranged in the space between said panels and having its opposite end adapted to be connected to a suction hose.

In testimony whereof I affix my si ature.

EVAN EDWARD CAN ON.

strips into contact with the for laterally expanding said member for urgin the same into lateral having one end opening into, 

